30 lines
941 B
Text
30 lines
941 B
Text
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#version 100
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precision lowp float;
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varying vec2 texcoord;
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uniform sampler2D tex;
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uniform vec2 wobble;
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uniform vec3 invert;
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uniform vec2 blur;
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// Source: https://github.com/Jam3/glsl-fast-gaussian-blur/blob/master/5.glsl
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vec4 blur5(sampler2D image, vec2 uv, vec2 resolution, vec2 direction) {
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vec4 color = vec4(0.0);
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vec2 off1 = vec2(1.3333333333333333) * direction;
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color += texture2D(image, uv) * 0.29411764705882354;
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color += texture2D(image, uv + (off1 / resolution)) * 0.35294117647058826;
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color += texture2D(image, uv - (off1 / resolution)) * 0.35294117647058826;
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return color;
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}
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void main() {
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vec2 offset = wobble.x * vec2(
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sin(wobble.y + texcoord.y) * 0.1,
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cos(wobble.y + texcoord.x) * 0.1
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);
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vec4 col = texture2D(tex, texcoord + offset * (1.0 - length(texcoord - 0.5) ));
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gl_FragColor = (1.0 - col) * vec4(invert, 1.0) + col * (1.0 - vec4(invert, 1.0));//blur5(tex, texcoord, blur, vec2(3.0));
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}
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